High piezoelectricity performance in PSBZT ceramic for ultrasonic transducer.

Lead zirconate titanate (PZT) ceramics possess great potential for practical applications and thus improving their piezoelectric properties is crucial. Pb 0. 9 9 − x Sm 0. 0 1 Ba x Zr 0. 5 3 Ti 0. 4 7 O₃ (PSBZT) ceramics with high Curie temperature and excellent piezoelectric properties were fabricated via a conventional solid-state method, and the effect of Ba 2 + doping on the structural, dielectric, piezoelectric and ferroelectric properties was studied in detail. It is shown that doping of Ba 2 + significantly enhanced the piezoelectric properties of PSZT, the maximum d 3 3 ∼ 533 pC/N and T c ∼ 361 ∘ C at x = 0.02 were acquired. Furthermore, PSZT and PSBZT ceramics were used to prepare single element ultrasonic transducers, and their performance were compared and evaluated. The results demonstrate that the PSBZT ceramic-based transducer possesses better sensitivity and bandwidth than the PSZT ceramic-based transducer. [ABSTRACT FROM AUTHOR]